Dow Water & Process Solutions



AMBERJET UP4000 is a uniform, strong base anion exchange resin developed specifically for use in producing ultrapure water for the semiconductor industry. It can be used in individual vessels or in mixed bed units with AMBERJET™ UP1400.

Used In:

  • Regenerable mixed bed and other polishing units in the production of water for the semi-conductor and electronic industries
  • Single bed or mixed bed columns


  • Low particales
  • Very clean resins
  • Ready for use
  • Formulated to ensure minimum impurity leakage

Typical Properties

These properties are typical but do not constitute specifications.

Total exchange capacity[1] eq/L ≥ 1.10 (OH- form)
Max. Op. Temp. °C
Moisture holding capacity[1] % 56 to 60 (OH- form)
Physical form   Yellow translucent spherical beads
Uniformity coefficient   ≤ 1.2
Harmonic mean size mm 0.580 to 0.680
Fines content[1] mm < 0.425 : 0.5% max
Ionic form as shipped   Hydroxide